Chung D Y
Scand Audiol. 1980;9(1):29-32. doi: 10.3109/01050398009076331.
Audiological findings in patients with histories of noise exposure were examined. 27 patients (1.5%) were found to have audiograms with a double-notch configuration. Information from their occupational history, medical history, and audiological findings was gathered and analysed. Their results were compared with those of 50 random samples of patients without the double-notch audiogram. Analyses suggest that the low frequency notch is probably also caused by noise damage. The low incidence of double-notch audiogram reflects the small proportion of people with susceptibility to noise damage at the 500 Hz to 1 kHz region in addition to the 3 to 6 kHz region. This double-notch configuration could be exaggerated possibly by the release from inhibition by damaged hair cells.
对有噪声暴露史的患者的听力学检查结果进行了研究。发现27例患者（1.5%）的听力图呈双切迹形态。收集并分析了他们的职业史、病史和听力学检查结果。将他们的结果与50例无双切迹听力图的随机患者样本的结果进行了比较。分析表明，低频切迹可能也是由噪声损伤引起的。双切迹听力图的低发生率反映了除3至6千赫兹区域外，在500赫兹至1千赫兹区域易受噪声损伤的人群比例较小。这种双切迹形态可能因受损毛细胞抑制作用的解除而被夸大。
